"You Know I Care" is a jazz ballad composed by Duke Pearson, the pianist, composer, and arranger who was one of the most prolific contributors to the Blue Note Records catalog during the 1960s. The composition has been described as possibly the most representative original ballad of the 1960s Blue Note period, encapsulating the harmonic language and emotional directness that defined that era of hard bop and modal jazz. Its harmonic foundation is built on alternating ii-V7 progressions in keys a major third apart, creating a cyclical, contemplative motion that generates forward momentum through elegant tension and release rather than dramatic harmonic surprises. The closing measures of its A sections feature a descending sequence of chromatic dominant seventh chords that provide a sophisticated cadential gesture. Joe Henderson recorded what is widely considered the definitive version of the tune on his Inner Urge album, where his tenor saxophone solo was praised for breathing additional dimension and drama into an already singular composition. Pearson himself recorded the piece approximately six months later in a six-horn arrangement that showcased his skills as an arranger. The composition has maintained a steady presence in the jazz repertoire over the decades, with contemporary artists continuing to reinterpret it, including a 2023 recording by Tenderlonious featuring the melody on alto flute in a chamber-music setting that demonstrated the tune's adaptability across different instrumental textures.